Heat oven to 325 degrees. In a saucepan, combine cream and vanilla bean and cook over low heat just until hot. Let sit for a few minutes, then discard vanilla bean. (If using vanilla extract, add it now.) In a bowl, beat yolks and sugar together until light. Stir about a quarter of the cream into this mixture, then pour sugar-egg mixture into cream and stir. Pour into four 6-ounce ramekins and place ramekins in a baking dish; fill dish with boiling water halfway up the sides of the dishes. Bake for about 30 minutes, or until centers are barely set. Cool. Ramekins can be wrapped tightly and refrigerated for a couple of days. When ready to serve, top each custard with about a teaspoon of sugar in a thin layer. Place ramekins in a broiler 2 to 3 inches from heat source. Turn on broiler. Cook until sugar melts and browns or even blackens a bit, about 5 minutes. Serve within two hours.

- you could also choose to use the vanilla bean, but choose instead to add whole (possibly vanilla hazelnut) coffee beans into the the cream while it's heating. Then spoon them out.